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G. C. DEBAY.

GLASS BAIT.

APPLICATION FILED AUG-211917.

Patented July 1, 1919.

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Patented tin and...

Application filed llugustit, Wit. Serial lilo. 'lldd,ldtt.

a full, clear, and exact description thereof.

My invention relates to a bait for usein connection with the drawing of glass-cylinders.

The object of my inventionfis to provide a bait in .which the connection between the molten glass and the bait is made without 15 submerg'ing the bait, and also to provide for relieving the strain on the glass engaging the bait due to the contracting caused by cooling. I N

In the accompanying drawing, Figure 1 is a vertical sectional view of my improved bait showing the parts in full lines in position to relieve the strain due to contraction, the dotted lines in this figure indicating the position of parts when the bait is lowered to take up glass. Fig. 2 is a plan view thereof showing the several sections of which the bait is composed in closedposition, Fig. 3 is a like view showing the sections released; and Fig. 4 is a sectional view of a ortion of the bait showing the. cam for re easing the contracting plate.

In the drawing, the numeral 2 designates the main body portion of the bait, which is preferably formed in two or-more sections, the bait illustrated being composed of three sections 3, 4: and 5. These sections are made movable to provide for the releasing of the head of the cylinder, after it is drawn. A plate 6 has the hub ortion 7 into which the blow pipeS is threa ed.

l The sections 3; 4 and are sl-idable horizontally on the plate 6, and bolts 9 pass down through slots 10 in. the sections 3, t and-'5, and enter holes formed for them in the plate 6. In this way guiding means is provided for jhe sections as they move outwardly and inwardly.

Pins 11 extend up from the sections d, 4- and 5, said ins bearing at their up er ends the idle-rollhrs 12 whichengage t e carnslots 13 in the wings 14 of the plate "3. A handle 16 is secured to the plate lband by means of said handle, said plate is rotated around the blow-pipe 8, said plate having 55 the hub-portion 17 surrounding said blowpipe confined by the collars and 15". By

this movement at the plate 15 the cam-slots l3 acting on the pins 11 move the sections 3, y

d and 5 to and from each other for the pun pose more fully hereinafter set forth. to A disk 18 surrounds the blowpipe 8, said dislr being interposed between the collar 15 and the hub-portion 7 of the plate 6. This disk 18 is provided with the raised cam-portions 19 with the slots 20 formed therein. to

- Bolts 21 engage the slotsQO, saidbolts having the heads 22 which are adapted to move up and down the "canislfil. The inner ends at the'bolts 21 are threaded into the con tractingplate 23 whereby said plate is sup 7o ported in position. The contracting plate 23 has the downwardly and inwardly 'lnclined peripheral portion 24 which with the downwardly extending flange 25 of the sec tions 3, t and 5 form an annular cavityor 76 recess 26. p p

A gland 27 is threadedinto an opening 2S in the contracting plate 23, said"gland eir'- tending into the blow pipea-nd having the outer flan ehead 29." A hand e 30 is connectedto the disk '18 by' means of which said disk is turned, j whereby the contracting plate "23 is raised and lowered.

Instead of submcrging the bait infthett molten glass in order to form a connection between the bait and the molten glass for drawin purposes, l introduce the glass into the poo st orrecess26 bymeans of suction, and for this purpose the sections 3, land 5 .91 are provided with the ports 31 which cornmunicate with the pocket 26. Pipes 32 have the connections 33 connected up with each port, and each set of pipes 32 of eachsection is connected up to the pipes of the other sections by the flexible connections 34: which permits or". the separation of the sections to release the cylinder head as shown in Fig. 3. The suction-pipe 35 is connected up to this system of pipes in order to create sufficient suction to draw the glass up into the annular cavity 26. The suction-pipe 35 'isconnectcd up to any suitable pump or fan which will give the. required suction action, and l have illustrated a suitable device for we this urpose. a Wish my improved bait is in use with the parts in position as indicated in dotted I lines Fig. 1 and in Fig.4, the bait is low-.

.ered down to the surface or the molten 1 glass, whereupon y applyingsuction to the in Fig. 4. The drawing operation now begins and in order to relieve the strain on the head 36-the contracting plate :23 is raised which is done byturning the handle and through the disk 18 and the cams 19-, the contracting plate is raised to the osition indicated in Fig. 1, thereby relieving the strain on the cylinder head 36, and permitting it to contract without danger of breaking and so destroy-ing the entire cylinder.

.It will be understood that the suction is maintained until the cylinder has been drawn to a suflicient length to cause the chilling ot' the glass in the bait, whereupon the suction is dispensed with and the cylinder drawn by the engagement of the glass with the bait due to the chilling of same.

After the cylinder has been drawn to the desired length it is released from the bait by operating the handle 16 to turn the disk 15 which acts through the parts described to expand the bait. or separate the sections 3, 4 and 5 thereof as indicatel in Fig. 3

I permitting the cylinder head to be released vfrom the bait.

By my invention 1 provide a bait which is not submerged in the molten glass to make the connection therewith, whereby the wear and tear on the bait is accordingly reduced, and by sucking the glass up into the bait the glass chills more readily and the drawing can proceed with less delay.

l ulthermorc, I provide means for relieving the strains on the head due to contraction thereby creating a great saving in cylinder, and, when the cylinder is drawn, by the mere movement of a lever,;the cylinder can be released without being cracked ofl the bait.

What I claim is:

1. A bait for drawing lass cylinders having a downwardly extending flange portion, a contracting membertorining with said dowmvardly extending flange an annular cavity to receive the glass, and means for increasing the size of said cavity by the movement of said contracting member, whereby the strain on the head of the cylinder is relieved.

2. A bait for drawing glass cylinders having a downwardly extending flange portion, a contracting plate having a peripheral portion forming with the first-named flange portion an annular cavity to receive the glass, and means for moving said contracting plate to increase the size of said cavity whereby the strain on the head of the cylinder is relieved.

3. A bait for drawing glass cylinders having a downwardly extending flange portion, a contracting plate having an inwardly inclined peripheral portion forming with said first-named flange portion a cavity to receive the glass, and means for raising said contracting plate.

4. A bait for drawing glass cylinders hav ing a downwardly extending flange portion, a contracting plate having an inwardly iii-- clined peripheral portion forming with said first flange portion a cavity to receive the glass, a rotary disk having cam faces and slots therein, and 'bolts extending through said slots and engaging said contracting plate.

5. A bait for drawing glass cylinders having a cavity to receive the glass, a plurality of segmental horizontally movable sections, said sections having ports connnunicating with said cavity, pipes connecting with said ports, flexible connections between the pipes of the several sections, and connected up to the pipes of one section.

In testimony whereof, I the said Gnouon (J. DEBAY, have hereunto set my hand.

GEOLGTG (-1. DEBAY.

Witnesses JOHN F. WILL, S. F. ARMs'rnoNo.

a suction pipe 

